A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
NSN 5925-00-168-8626
NSN 5975-00-244-6480
NSN 6110-00-846-4579
NSN 4140-00-128-8072
NSN 6110-01-169-8476
NSN 5905-00-006-1331
NSN 5950-01-565-0460
NSN 6240-01-480-0892
NSN 6240-00-398-0740
NSN 6685-01-487-8310
NSN 6130-01-268-1703
NSN 6105-00-675-0525